Heres a little something to think about, for those times a firearm isnt allowed or quite appropriate.
Back in the day a walking stick or cane was a part of a gentleman's attire. It was always there.
A heavy cane made from hardwood isnt hardly noticed when out and about. A nice well finished cane.can not only be a fashion statement but a solid self defense tool. A cane with a shaft 1 3/8" diameter at the top tapering down to 3/4"at the tip with a ball style or other handle (I dont care for the hook styles), males for a formidable stick that no one notices.
Courts, post offices, schools, and other banned buildings arnt going to take away your walking stick. Remember they have to be friendly to the handicapped .
When I was mobile my walking stick was made from walnut to the above shaft dimensions with a 2 1/2" ball handle just behind the shaft. A with a polished oil finish. Looked good and didnt stand out for its other uses. Brings a new meaning to concealed in plain sight.